Easyui Tree 获取节点 层级

$(function(){
	$.extend($.fn.tree.methods, {
		getLevel:function(jq,target){
			var l = $(target).parentsUntil("ul.tree","ul");
			return l.length+1;
		}
	});
	
	initTree();
	

});

function initTree(){
	var node = $('#myTree').tree("getSelected");
	var lv =  $('#myTree').tree("getLevel",node.target);
	alert(lv);
}